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CVE-2021-38506

CVSS v3.1 4.3 (Medium)
43% Progress
CVSS v2.0 4.3 (Medium)
43% Progress
EPSS 0.44 % (75th)
0.44% Progress
Affected Products 4
Advisories 31
Info CVSS EPSS CAPEC Affected Configurations References Security Advisories Packages & Software OVAL Tools, Exploits & PoC Graph Web & Social Timeline

Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning to the user. This could lead to spoofing attacks on the browser UI including phishing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.

Weaknesses
CWE-1021
Improper Restriction of Rendered UI Layers or Frames
CVE Status
PUBLISHED
CNA
Mozilla Corporation
Published Date
2021-12-08 22:15:08
(2 years ago)
Updated Date
2022-12-09 15:31:26
(21 months ago)

Affected Products

Debian

Mozilla

Configuration #1

    CPE23 From Up To
  Mozilla Firefox prior 94.0 version cpe:2.3:a:mozilla:firefox < 94.0
  Mozilla Firefox Esr prior 91.3.0 version cpe:2.3:a:mozilla:firefox_esr < 91.3.0
  Mozilla Thunderbird prior 91.3.0 version cpe:2.3:a:mozilla:thunderbird < 91.3.0

Configuration #2

    CPE23 From Up To
  Debian Linux 9.0 cpe:2.3:o:debian:debian_linux:9.0
  Debian Linux 10.0 cpe:2.3:o:debian:debian_linux:10.0
  Debian Linux 11.0 cpe:2.3:o:debian:debian_linux:11.0